Site

State

PM AQI* (ug/m3)

Colbert-Greenbluff

WA

14

Bend - Pump Station

OR

11

Spokane-E Broadway Ave (US)

WA

11

Spokane-Augusta Ave

WA

7

Seattle-South Park

WA

7

Mesa-Pepoit Way (temp SO)

WA

6

Colville-E 1st St

WA

6

Seattle-Duwamish

WA

5

Spokane-Monroe St.

WA

5

Oakridge - Willamette Activ...

OR

5